my Toyota Corolla E170 (2013-2019) is consuming too much oil what can I do

Toyota Corolla E170 (2013-2019)

Error Codes

4-8 hours

Time

hard

Difficulty

high

Severity

3 min read

559 words

⚠️ Safety Warning

This issue requires immediate attention. If you are not experienced with automotive repairs, consult a professional mechanic. Working on critical systems can be dangerous.

Problem Statement

Learn how to diagnose and fix excessive oil consumption in Toyota Corolla E170 (2013-2019). Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Engine

Estimated Time

4-8 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems.
•Allow the engine to cool before opening the hood to prevent burns.

Symptoms

•Check engine light illuminated
•Blue smoke from the exhaust
•Oil level dropping rapidly between changes
•Engine misfire or rough running
•Increased oil consumption without visible leaks
•Oil residue around engine components

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify potential engine management issues.
2
Check engine oil level and condition to confirm the rate of consumption and inspect for contamination.
3
Inspect for external oil leaks around gaskets, seals, and the oil pan.
4
Perform a compression test to assess the health of the engine's cylinders.
5
Conduct a leak-down test to evaluate the integrity of the piston rings and valves.
6
Examine the PCV (Positive Crankcase Ventilation) system for blockages or malfunctions that could lead to increased oil consumption.

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

Verification

After completing the repair, verify that the issue has been resolved:

✓Test the affected component to ensure it functions correctly
✓Check for any error codes or warning lights
✓Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

•Follow the manufacturer's recommended maintenance schedule
•Address warning signs early before they develop into major issues
•Use quality parts and fluids recommended for your vehicle
•Keep detailed records of all repairs and maintenance

Tools & Equipment Required

•OBD-II scanner
•Oil catch pan
•Socket set
•Torque wrench
•Compression tester
•Leak-down tester

Parts Required

•Valve cover gasket
•Oil pan gasket
•Piston rings (if applicable)
•Valve seals (if applicable)
•Engine oil

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify potential engine management issues.
2
Check engine oil level and condition to confirm the rate of consumption and inspect for contamination.
3
Inspect for external oil leaks around gaskets, seals, and the oil pan.
4
Perform a compression test to assess the health of the engine's cylinders.
5
Conduct a leak-down test to evaluate the integrity of the piston rings and valves.
6
Examine the PCV (Positive Crankcase Ventilation) system for blockages or malfunctions that could lead to increased oil consumption.

Solution

1. Preparation

Gather tools and parts: OBD-II scanner, oil catch pan, socket set, torque wrench, compression tester, leak-down tester, replacement gaskets, and oil filter.
Ensure safety: Disconnect the battery to prevent electrical shorts and allow the engine to cool before starting work.

2. Addressing External Leaks

Clean the engine: Use a degreaser to remove oil build-up around suspected leak areas.
Inspect and replace gaskets: Focus on the valve cover gasket and oil pan gasket if leaks are found.
- Remove components as necessary to access gaskets.
- Replace with OEM-quality gaskets and apply proper torque specifications when reinstalling.
Sealant application: If necessary, apply a suitable RTV sealant for additional sealing, ensuring it cures as per manufacturer's instructions.

3. Repairing Internal Issues

Perform a compression test:
- Remove spark plugs and install a compression tester in each cylinder.
- Record readings; low compression in any cylinder may indicate ring wear or valve issues.
Conduct a leak-down test:
- With the engine at TDC for each cylinder, attach the leak-down tester.
- Listen for air escaping from the crankcase, intake, or exhaust to pinpoint the source of the issue.
Replace worn components: If compression or leak-down tests indicate wear, consider replacing piston rings or valve seals. This requires:
- Removing the cylinder head and oil pan.
- Replacing rings and seals, ensuring all parts are torqued to specifications during reassembly.